§ IL Illinois
County permits
Montgomery County
Montgomery County issues permits only for unincorporated areas. Inside an incorporated city? Pick the city below — its building department handles your permit.
§ 01 Unincorporated
Unincorporated Montgomery County.
If your property isn't inside an incorporated city, the county permit office handles your application directly.
- Permit authority
- Montgomery County Supervisor of Assessments
- Website
- Permit authority website ↗
- Phone
- 217-532-9595
- Address
- 1 Courthouse Square, Room 201, Hillsboro, IL 62049
§ 02 Jurisdictions
Cities in Montgomery County
Click any city for its full permit guide — authority, fees, application steps, inspections, and exempt work.
§ 03 County navigation
Information last verified for Montgomery County, Illinois. Permit rules and fees change frequently — verify current requirements with the issuing department before applying. Jaspector is an educational reference, not legal advice.